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Thermopower studies of percolating magnetic metallic nanostructures : The 7th joint MMM-intermag conference on magnetism and magnetic materials (1998)

Jing, X. N. ; Yan, X.

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 83 (1998), S. 6530-6532

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: We have observed a small and temperature insensitive thermal electric power S as well as a large resistivity following ρ∼−log(T) dependence, in percolating magnetic metal-insulator nanocomposites, irrespective to the sign of the carrier. Upon annealing, however, a normal metallic behavior with a linear temperature dependence for both S and ρ was recovered. We propose that the large charging energy of the nanometer sized particles in the percolation conduction channels is responsible for this observation as well as the giant Hall effect or the loss of the effective carrier density in these nanostructures. © 1998 American Institute of Physics.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.367858

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